大量填充树脂复合材料的聚合和收缩动力学和断裂性
Jiawei Yang1, Nick Silikas1, David C Watts2
1School of Medical Sciences, University of Manchester, Manchester, UK.
概括
不同的散装复合材料显示了相似的收缩,但超声波和预加热提高了流动性,而不会增加收缩或降低断裂性.
科学领域:
- 牙科材料科学 牙科材料科学
- 聚合物化学 聚合物化学
- 生物材料工程 生物材料工程
背景情况:
- 大量填充 (BF) 复合材料具有临床优势,但需要小心处理,以确保充分的转化并最大限度地减少聚合应激.
- 像超声波和预热这样的粘度降低技术被用来改善BF复合材料的处理和放置.
研究的目的:
- 为了评估不同BF复合材料的转化程度 (DC),最大聚合率 (RPmax),聚合收缩率 (PS),最大收缩率 (PS Rmax) 和断裂性 (KIC).
- 评估粘度降低技术 (超声波和预热) 对这些特性的影响.
主要方法:
- 四种BF复合材料 (SonicFill 3,Viscalor,One Bulk Fill,Beautifil Bulk) 进行了测试. 这些复合材料包括:
- 用实时ATR-FTIR和粘合盘技术测量了聚合动力学,DC和PS.
- 在储水后使用三点曲试验来确定断裂性 (KIC).
主要成果:
- 索尼Fill 3 显示了最高的 DC 和 RPmax. 在大多数材料中,聚合收缩是可比的,其中一个散装填充显示了最高的PS.
- SonicFill 3显示了最高的PS Rmax,而Beautifil Bulk具有最低的断裂性 (KIC).
- 预加热Viscalor并没有显著改变其性能;超声波和预加热增强了流动性,而不会影响收缩或性.
结论:
- BF复合材料的性能各不相同,SonicFill 3显示出优异的转换性,Viscalor/Beautifil Bulk显示出不同的收缩和性配置.
- 像超声波和预加热这样的粘度降低技术在改善BF复合材料处理方面是有效的,而不会对关键材料性能产生负面影响.
- 材料选择和适当的处理技术对于优化BF复合材料的临床结果至关重要.
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